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Unformatted text preview: . What is the area of the circle? Round your answer to 2 significant figures. The area of the circle is π(D/2)² where D is the diameter of the circle. The diameter of the circle is the length of the line CD. ∆ABC ≅ ∆EFB and we know that EF = 9cm and FB = 15cm – 9 cm, therefore AB/EF = AD/FB or 15/9 = AD/(15
9) and AD = 10 cm. Since ∆ABC ≅ ∆ABD then AB/AD = CA/AB or 15/10 = CA/15 so CA = 22.5 cm....
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This homework help was uploaded on 04/05/2014 for the course PHYS 100 taught by Professor Dech during the Fall '08 term at Drexel.
 Fall '08
 Dech
 Physics, Work

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